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Nolzeite

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Gert Nolze
Formula:
NaMn2[Si3BO9](OH)2·2H2O
Original formula: Na(Mn,□)2[Si3(B,Si)O9(OH)2]•2H2O
Colour:
Colourless to pale green
Lustre:
Vitreous
Specific Gravity:
2.79 (Calculated)
Crystal System:
Triclinic
Name:
Named for Dr. Gert Nolze (b. 1960), a crystallographer at the Federal Institute for Materials Research and Testing (BAM), Berlin, Germany. Dr. Nolze, in conjunction with Dr. Werner Kraus, developed Powdercell (Kraus & Nolze 1996; currently in ver. 2.4), a program that has been extensively used in the calculation of powder X-ray diffraction patterns of minerals.
A pyroxenoid related to steedeite and the members of the pectolite-sérandite series.

Crystal structure details: (1) chains of tetrahedra (dreier type) with 3 independent SiO4 groups in C-shaped clusters; (2) BO2(OH)2 tetrahedra enclosing the clusters [(1) + (2) give dreier borosilicate chains]. Double borosilicate chains are formed by linking the single chains by MnO5(OH) octahedra.

Discovered by Col. Quintin Wight in August 1987 and was provisionally designated UK78


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Classification of NolzeiteHide

Approved
Approval Year:
2014
First Published:
2017
8/F.0-

8 : Silicates
F : Inosilicates (chain and band) double chains [Si2O6]4-
0 :

Physical Properties of NolzeiteHide

Vitreous
Colour:
Colourless to pale green
Streak:
White
Density:
2.79 g/cm3 (Calculated)

Optical Data of NolzeiteHide

Type:
Biaxial (+)
RI values:
n = 1.616 - 1.632
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Comments:
Assumed to be biaxial nmin = 1.616(2) and nmax = 1.636(2)

Chemical Properties of NolzeiteHide

Formula:
NaMn2[Si3BO9](OH)2·2H2O

Original formula: Na(Mn,□)2[Si3(B,Si)O9(OH)2]•2H2O
IMA Formula:
Na(Mn,◻)2[Si3(B,Si)O9](OH)2 · 2H2O
Common Impurities:
(Fe,S,Ca)

Crystallography of NolzeiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.894(1) Å, b = 7.632(2) Å, c = 11.017(2) Å
α = 108.39(3)°, β = 99.03(3)°, γ = 103.05(3)°
Ratio:
a:b:c = 0.903 : 1 : 1.444
Unit Cell V:
519.27 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Acicular crystals, 5 x 8 x 55 μm on average, in radiating groups or loose

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.113(100)
6.911(16)
3.593(13)
3.520(9)
3.026(15)
2.808(50)
2.675(12)
2.463(12)
Comments:
From Type Description.

Type Occurrence of NolzeiteHide

General Appearance of Type Material:
Acicular
Place of Conservation of Type Material:
Type material is deposited in the collections of the Canadian Museum of Nature, Gatineau, Quebec, Canada, catalogue number CMNMC 86851
Geological Setting of Type Material:
Late-stage in altered sodalite syenite; also associated with "UK80" unknown phase
Associated Minerals at Type Locality:
Reference:
Haring, M., McDonald, A.M. (2017) Nolzeite, Na(Mn,□)2[Si3(B,Si)O9(OH)2]•2H2O, a new pyroxenoid mineral. Mineralogical Magazine: 81: 183–197.

Synonyms of NolzeiteHide

Related Minerals - Nickel-Strunz Grouping (8th Edition)Hide

8/F.0-Potassic-eckermannite{K}{Na2}{Mg4Al}(Si8O22)(OH)2

Fluorescence of NolzeiteHide

None observed. Closely associated steedeite is fluorescent.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for NolzeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Haring, M.M., McDonald, A.M. (2015) Nolzeite, IMA 2014-086. CNMNC Newsletter No. 24, April 2015, page 248; Mineralogical Magazine: 79: 247-251
Haring, M., McDonald, A.M. (2017) Nolzeite, Na(Mn,□)2[Si3(B,Si)O9(OH)2]•2H2O, a new pyroxenoid mineral. Mineralogical Magazine: 81: 183–197.

Internet Links for NolzeiteHide

Localities for NolzeiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada (TL)
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Haring, M.M. and McDonald, A.M. (2015) Nolzeite, IMA 2014-086. CNMNC Newsletter No. 24, April 2015, page 248; Mineralogical Magazine, 79, 247-251; Haring, M. & McDonald, A.M. (2017): Nolzeite, Na(Mn,□)2[Si3(B,Si)O9(OH)2]•2H2O, a new pyroxenoid mineral. Mineralogical Magazine, 81, 183–197
Mineral and/or Locality  
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